CYCLOSTOMACEA. 307 



44. Cyclostoma (Otopoma) aplustre, Sow. 



1 Madagascar ; ex c. A. Morelet, Esq. 



45. Cyclostoma (Otopoma) xanthocheilum, Sow. 



1 Mayolte; ex c. A. Morelet, Esq. 



46. Cyclostoma (Otopoma) ligatum, Muiier. 



2 Cape of Good Hope. 



47. Cyclostoma (Otopoma) vitellinum, Pfeiffer. 



2 Natal. 



1 Natal ; coll. G. Nevill, Esq. 



48. Cyclostoma (Otopoma), sp. 



1 Natal ; ex c. W. Theobald, Esq. 



49. Cyclostoma (Otopoma) castum, Pfeiffer. 



2 Madagascar ; ex c. Evenor Diipont, Esq. 



60. Cyclostoma (Otopoma) naticoides, Recluz. 



2 Socotra ; ex c. Evenor Dupont, Esq. 



51. Cyclostoma (Otopoma) hinduorum, Bianford. 



13 Kattywar ; coll. W. T. Blanfoitl, Esq. 



52. Cyclostoma (Otopoma) listen, Gray. 



14 Mam-itius, near the sea shore ; coll. G. Nevill, Esq. 



var. (?) 



3 On the sea shore, Mauritius (semi -fossil); coll. G. Nevill, Esq. 



var. (? C. icterica. Sow.) 



10 (semi-fossil) ; coll. G. Nevill, Esq. 



53. Cyclostoma (Otopoma) fimbriatum. Lam. 



30 Mauritius ; coll. G. Nevill, Esq. 



var. major, no v. 



Rather larger, with more open umbilicus> forming a transi- 

 tion to G. haemastomum ; the sculpture is coarser. 



4 Mauritius ; coll. G. Nevill, Esq. 



var. SemisCulpta, nov. 



Sculpture obsolete in the middle of the last whorl, in this 

 respect forming a transition to G. listeri ; perhaps it is a hybrid 

 race ? 



